I don't understand why a predalien couldn't be a queen, too. If aliens take on the characteristics of the host, then aren't they ALL hybrids, with the standard "drones" being human hybrids (that would explain the human-scale limbs, rib-cage, teeth, and jaw, not to mention the human skull embedded in the face of Giger's alien)? So, if the alien hive in ALIENS was all bred from human stock, and the drones are known to change with different hosts, shouldn't the queen change as well? Don't get me wrong, I'm not psyched about a predalien queen, just because I'd like to see a "standard" predalien drone before complicating things any further.